Fluval FX4 High Performance Canister Filter

Fluval FX4 High Performance Canister Filter

Marsoni

M251S

$287.50

Get it in 3 business days with 1 day shipping. Friday, May 29

Fluval FX4 High Performance Canister FilterHigh Performance Canister Filtration European ingenuity and innovation have fueled the next generation of FX canister filters, which feature patented SMART PUMP performance optimising technology, intricate multi stage filtration, a built in powered water change system and basket in basket tray design offering greater media capacity. As always, you can expect FX's legendary mix of power and efficiency that lets you spend more time enjoying your tank,

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Bought three of these for my home office. Two for Synology NAS drives and one for a Mac Studio. The size ranges make this the perfect product to get everything off my desk. A little difficult to install with the desk upright so I suggest turning it on its side or over completely. In my case, I have these in sit stand desks which is great.

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Reviewed in the United States on December 24, 2025

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William Lech

Dallas, US

★★★★★ 4

Decent bracket, Non-beveled screw holes cause complications

The screws that secure the mount to the underside of the desk stick out enough to cause the inner dimensions to change. I had to use the next hole down to increase the size of the bracket to accommodate my device, resulting in a less secure mount than desired. If the holes were beveled so that the screws fit more flush with the mount I'd be able to give it 5 stars. But the inner dimensions are not entirely as advertised due to the screws. Quality is up to standard otherwise, installation is relatively straightforward, price point is fine for a bracket of this size.

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Reviewed in the United States on September 18, 2025

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Kris

Charlottesville, US

★★★★★ 5

Great mount!

Great under desk NAS mount. Adjustable and sturdy, easy to install. Worked well for my Qnap TR-004 four slot DAS. I used 5/64 drill bit for the holes. Since my desk has a rear lip I reused rear stopper bit as a headphone hanger. I bend it slightly to a hook shape.

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Reviewed in the United States on May 6, 2025

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Brian

Louisville, US

★★★★★ 5

Tucks my NAS away

Sturdy and a major space saver. Worth the money to free up valuable desk space. Held my 6 bay QNAO NAS perfectly. Highly recommend.

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Reviewed in the United States on November 28, 2025

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Christopher Shaw